TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 394 of 890
TM 9-2320-280-20-1 KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS TEST OPTIONS REASON FOR QUESTION KNOWN INFO POSSIBLE PROBLEMS NO YES NO YES 2-300 Change 1 DISCONNECT BATTERY NEGATIVE CABLE. DISCONNECT BODY CONNECTOR FROM PCB/DISTRIBUTION BOX. IS THERE CONTINUITY FROM SOCKET G OF BODY CONNECTOR HARNESS TO WIRE 11A AT ROTARY SWITCH ? RECONNECT WIRE 11A AT ROTARY SWITCH. DISCONNECT ENGINE CONNECTOR OF PCB/DISTRIBUTION BOX. RECONNECT BATTERY NEGATIVE CABLE. IS THERE BATTERY VOLTAGE AT SOCKET E OF CONNECTOR HARNESS? REPLACE PROTECTIVE CONTROL BOX/DISTRIBUTION BOX. NO VOLTAGE AT ROTARY SWITCH PCB/DISTRIBUTION BOX WIRING NO VOLTAGE AT ROTARY SWITCH WIRING TO ROTARY SWITCH OK PCB/DISTRIBUTION BOX WIRING WIRING OK PCB/DISTRIBUTION BOX J1 J2 J3 J FROM I1, Page 2-298 REPAIR WIRE 11A OR REPLACE HARNESS REPAIR WIRE 81A OR REPLACE HARNESS 1. STE/ICE-R TEST 91 (Page 2-752) 2. MULTIMETER If this wire is open, no power can get to the rotary switch. 1. STE/ICE-R TEST 89 (Page 2-750) 2. MULTIMETER This wire provides power from the batteries directly to the PCB/distribution box. If there is power here, then this wire is OK and the PCB/distribution box must be bad. DIAGNOSTIC FLOWCHART STARTER CIRCUIT